Governing mechanism for fluid-actuated motors.



No. 746,836. PATENTBD 1350.15, 1903.

H. HOLZWARTH. GOVERNING MECHANISM FOR FLUIDAGTUATBD M TORS.

APPLICATION FILED 001222, 1903- N0 MODEL.

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7 tudinally movable thereon.

UNITED I ST TES Patented December 15, 19053.

PATENT ()F ICE.

HANS I-IOLZWARTI-I, OF HAMILTON, OHIO, ASSIGNOR TO THE HOOVEN- OWENS-RENTSCHLER COMPANY,

TION OF OHIO.

or HAMILTON, OHIO, A CORPORA- SPECIFICATION forming part of LettersPatent No. 746,836, dated December 15, 1903.

Application filed October 22, 1903.-

Serial lilo. 178.063. (No model.)

To all whom it mayconcern:

Be it known that I, HANS HoLzWAR'rH, a citizen of Germany, residing atHamilton, county of Butler, and State of Ohio, have invented new anduseful Improvements in Governing Mechanism for Fluid-Actuated Mo tors,of which the following is aspecification.

My invention relates to improvements in governing mechanism forfluid-actuated mo tors.

The object of my invention is to provide adequate means for regulatingthe supply of motive fluid to the motor, whereby the speed of the lattermay be kept uniform, the invention being especially designed for thecontrol of turbines.

In the following description reference is had to the accompanyingdrawings,in which- Figure l is a vertical sectional view of my inventiondrawn on line a: a: of Fig. 2. Fig. 2 is a plan View with the upperportion of the casing removed. Fig. 3 is adetail sectional View drawn online y y of Fig. 2. Fig. 4 is a detail sectional view drawn on line t tof Fig. 2.

Like parts are identified by the same refer ence characters tb roughoutthe several views.

1 is a turbine-shaft or a reduced end thereof.

2 represents governing-weights having levers 3 pivoted to a shaft-collarat 4.

5 is a sleeve spiined to the shaft and longi- This sleeve is connectedwith the governing-weights by links 6.

A valve-actuating shaft 8 is arranged to communicate motion through thebevel-gears 9 and 10 and valve-stem 11 to operate a valve at 12,controlling the delivery of motive fluid to the turbine through thepipes 13 and 14. The valve-actuating shaft 8 is driven from theturbine-shaft 1 through the medium of a worm-gear 18, worm-wheel 19,tubular shaft 20, sliding shaft 21, extending through" the shaft andsplined thereto, friction-wheel 22 on the shaft 2i, and a friction-wheel23 and its supporting-sleeve 24, the latter being mounted on and splinedto the valve-actuating shaft 8. The movement and direction of rotationof said shaft 8 is determined by the relative positions of thefriction-wheels 23 with reference to the center of the friction-Wheel orcontact with the frictional wheel 23 through the medium of aspring-controlled bell-crank lever 28, fulcrumed at 29 and having oneforked arm a loosely engaging studs 30, projecting from acollar 31,loose on the'shaft 21. The bell-crank lever 28 is actuated (againstthe-tension of its controlling-spring from the sleeve 5 through themedium of studs 37,

antifriction-rollers 38, mounted thereon, a yoke 39,1nounted on therollers, and a post 40, connected with the yoke, the latter being linkedto an arm b of said bell-crank lever 28. The arms of the. yoke 39 areprovided with V-shaped notches 41, in which the antifriction-rollers 38are engaged, whereby movement of the sleeve 5 in either direction fromits normal position will be transmitted to actuate the yoke and post topush the same ontwardly at right angles to the sleeve and shift thefriction-wheel 22 into contact with Wheel 23 through the medium of thebellcrankconnectionsabovedescribed. The normal position of contactbetween the frictionwheels 23 and 22 is at the center of the latter. Abell-crank lever is used to shift the hub 24 and wheel 23' along thevalve-actuating'shaft 8, so that wheel 23 will be moved to one sideorthe other of friction-wheel 22 in accordance with the direction in whichit is desired to actuate the valve. This movement is also controlled bythe governor, the bell-crank lever45 havingyoke-arms d,loosely engagingthe. studs 37, and other yoke-arms 6, having linksfengaging studs 46 ona collar 47, rotatably mounted on hub 24. The pivot-rod 49 of thebell-crank lever 45 is suitably mounted in bearing-brackets 50,connectedwith the casing.

The operation of the device is as follows: When the turbine is at normalspeed, the parts are in the position in which they are shown in thedrawings. Any increase of speed causes the governing-weights and sleeve5 to move outwardly, thus shifting the friction-wheel 23 inwardlythrough the medium of the bell-crank 45 and also forcing thefriction-wheel 22 into contact with wheel 23 through the medium of thebell-crank 28 and its connections. The movement of the friction-wheel 23will then be communicated to operate the valve-actuating shaft 8 andclose the valve at 12 until the decreased speed of shaft 1 permits thegoverning-weights and connections to reassume their normal position.When the speed of shaft 2 is too slow the governing-weights moveinwardly, when friction-wheel 23 is shifted outwardly to the oppositeside of the center of friction-wheel 22 and the latter brought incontact with it to open the valve at 12. The friction-wheels anddriving-gearing may be arrangedto actuate the valve at any desiredspeed.

Having thus described myinvention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with the shaft of a fluiddriven motor; of avalve-actuating Wheel; a driving-wheel therefor shiftable into and outof operative relation thereto; a centrifugal governor operativelyconnected with the shaft; connections controlled by the governor forshifting one of wheels past the axial line of the other; and connectionsalso controlled by the governor for shifting said wheelsinto and outofcontact with each other.

2. The combination with the shaft of a fluid-driven motor; of avalve-actuating friction-wheel; a friction driving-wheel at right anglesthereto and movable into and out of operative relation thereto;connections for actuating the driving-wheel from the shaft; acentrifugal governor operatively connected with the shaft; ashifting-lever for the driving-wheel; a shifting-leverfor thevalveactuating wheel; and connections adapted to communicate motion fromthe governor to said levers.

3. The combination with the shaft of a fluid-driven motor; ofavalve-actuating friction-wheel; a friction-driven wheel mounted forside contact therewith, and operatively connected with the shaft;axially-movable supports for said wheels; centrifugal governing-weightsoperatively connected with the shaft; an axially-movable sleeve linkedto the governing-weights; and motion-transmitting connections betweenthe sleeve and said friction-wheel supports.

4;. The combination with the shaft of a fluid-driven motor; of avalve-actuating friction-wheel; a friction driving-wheel mounted forside contact therewith; axially-movable supportsfor said wheels; leverconnections arranged to support said driving-wheel normally out ofcontact with the valve-actuating wheel; a governing device in operativerelation to said shaft; an axially-movable sleeve mounted on said shaft,and linked to the governing device; and ayoke having angular faces,adapted to be engaged by projections on said sleeve when the latter ismoved in either direction from normal position; said yoke being arrangedto transmit motion through said lever connections to move the drivingfriction-wheel.into contact with the valveactuating wheel; together withmeans for transmitting motion from the sleeve to shift thevalve-actuating wheel to opposite sides of the axis of said drivingwheelin accordance with the speed of the governor.

In testimony whereof I affix my signature in the presence of twowitnesses.

HANS HOLZ WARTH.

